//
// server.cpp
// ~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Modified (c) 2009 Dustin Spicuzza <dustin@virtualroadside.com>
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include "server.hpp"
#include <boost/bind.hpp>

namespace http {
namespace server {

server::server(const std::string& address, const std::string& port,
		const std::string& doc_root, WebDMA_Pimpl * webdma)
	: io_service_(),
		acceptor_(io_service_),
		connection_manager_(),
		new_connection_(new connection(io_service_,
					connection_manager_, request_handler_)),
		request_handler_(doc_root, webdma)
{
	// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
	boost::asio::ip::tcp::resolver resolver(io_service_);
	boost::asio::ip::tcp::resolver::query query(address, port);
	boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
	acceptor_.open(endpoint.protocol());
	acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
	acceptor_.bind(endpoint);
	acceptor_.listen();
	acceptor_.async_accept(new_connection_->socket(),
			boost::bind(&server::handle_accept, this,
				boost::asio::placeholders::error));
}

void server::run()
{
	// The io_service::run() call will block until all asynchronous operations
	// have finished. While the server is running, there is always at least one
	// asynchronous operation outstanding: the asynchronous accept call waiting
	// for new incoming connections.
	io_service_.run();
}

void server::stop()
{
	// Post a call to the stop function so that server::stop() is safe to call
	// from any thread.
	io_service_.post(boost::bind(&server::handle_stop, this));
}

void server::handle_accept(const boost::system::error_code& e)
{
	if (!e)
	{
		connection_manager_.start(new_connection_);
		new_connection_.reset(new connection(io_service_,
					connection_manager_, request_handler_));
		acceptor_.async_accept(new_connection_->socket(),
				boost::bind(&server::handle_accept, this,
					boost::asio::placeholders::error));
	}
}

void server::handle_stop()
{
	// The server is stopped by cancelling all outstanding asynchronous
	// operations. Once all operations have finished the io_service::run() call
	// will exit.
	acceptor_.close();
	connection_manager_.stop_all();
}

} // namespace server
} // namespace http
